Originally Posted by
Banana
The manual recommends to only run CCI minmags. It comes with two springs, a strong one for high velocity ammo and a weaker one for standard. I use the weaker one and feed it whatever's cheapest. Yes, it is a bit fickle with the cheap stuff. I mostly use Winchester 555 which seems to only have just enough energy to cycle the slide. Any variables that aren't in its favour (dirty chamber, weak grip) and it'll short stroke. When clean it'll run 99% with cheap ammo. Also runs more reliably with the can on it.
I do like it, but if I was to buy again I'd probably just get a ruger 22/45 or MK. While the Sig has a lot of features for the money, a ruger is better quality.